added gravatar

src/css/less/p_pro.less

@@ -56,6 +56,19 @@
   }
 }
 
+.gravatar {
+  width: 170px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  .gravatar-missing {
+    display: none;
+  }
+  .gravatar-email {
+    padding-left: 4px;
+  }
+}
+
 .login-box {
   width: 700px;
   margin: 100px auto 0 auto;